I think that many people miss the most important thing here: it is not important if a currency hard-forks or not - what is important is that it can.

I have no confidence that Bitcoin or any other currency doesn't fork in the future, because it is possible at any moment. The fact that the fork has happened or not changes nothing - it always stays as a possibility.

In other words the chance of Ethereum or Bitcoin hard-forking in the future wouldn't change if the hard-fork didn't happen right now.